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VashaNatasha [74]
3 years ago
15

How many ways can 7 books be arranged on a shelf 5 at a time?

Mathematics
1 answer:
aliya0001 [1]3 years ago
5 0
Symbolically, write this:

   C
7     5.  Know how to evaluate that?


C stands for "combination."
You might be interested in
Michael is 17 year older than john.In 4 years,the sum of their ages will be 49.Find Michael's present age.​
grin007 [14]
Michael's present age is 53

Step-by-step

17-4=13

John is 13

than when John will be 49

u add 4 to 49

4+49=53

so Michael is 53 because he is 4 years older :)
8 0
4 years ago
Please help and thank you
o-na [289]

Answer:

D. g(x) = 1/4 x^2

Step-by-step explanation:

Horizontal stretched by a factor of 4 of parent function f(x) = x^2

-->

g(x) = 1/4 x^2

so answer is g(x) = 1/4 x^2

7 0
3 years ago
HELP!!
MrRa [10]

Answer:

the correct option is B

Step-by-step explanation:

AC and AB are both radii of circle A

an equilateral triangle is one with all three sides the same length and angle.

from point A of circle A, a compass is use to bisect.

it works because the compasss width is not changed between drawing each side, guaranteeing they are all equal with the same length

using an object and a circular base

1 . Use any cylindrical object with a circular base, each side of the equilateral triangle will be as long as the radius (half the diameter) of the circular object.

2. Draw the first side. It should be exactly as long as the radius of the circular object – the distance halfway across. Make sure that it is perfectly straight!  

If you have a ruler: simply measure the diameter of the object and draw a line that is half as long.

If you don't have a ruler: place the circular object onto a sheet of paper, then carefully trace the circumference with your pencil. Remove the object, and you should have a perfect circle. Use a straight edge to draw a line across the exact center of the circle: the point that is completely equidistant from any point around the circumference of the circle.

3. Trace another arc. Now, shift the circular object so that the edge touches the other end of the line segment. Make sure that the line segment runs through the exact center of the circle. Draw another quarter-arc that crosses the first arc at a point directly above the line segment. This point is the apex of your triangle.

4. Complete the triangle. Draw the remaining sides of the triangle: two more straight lines will connect the apex with the two open ends of the line segment.

reference: https://www.wikihow.com/Draw-an-Equilateral-Triangle

3 0
3 years ago
The height of a triangle is 7 cm longer than its base. The area of the triangle is 60 cm². What is the base of the triangle? Ent
Whitepunk [10]

Answer:

MRCORRECT has answered the question

Step-by-step explanation:

Base = b

height =h = b+7

Area = 1/2 * b* h

60 = 1/2*b*(b+7)

120 =b2+7b

 

b2+7b-120=0

 

(b+15)(b-8) =0

b=-15 and b=8

base cannot be negative

 

so base =b =8 cm

5 0
3 years ago
Read 2 more answers
1. Steve wants to buy a guitar. The model he wants costs $500.00. He can put down $100, but will need to take out a loan for the
worty [1.4K]

Answer:

<em>In one year he will pay about $32 in interest</em>

Step-by-step explanation:

<u>Simple Interest </u>

Interest is calculated on the original principal only of a loan or on the balance of an account.

Unlike compound interest where the interest earned in the compounding periods is added to the new principal, simple interest only considers the principal to calculate the interest.

The interest earned is calculated as follows:

I=P.r.t

Where:

I = Interest

P = initial principal balance

r = interest rate

t = time

Steve paid a down payment of $100 for a guitar that costs $500, therefore he stills owes P=$500-$100=$400. This is the principal amount that will be paid at an interest rate of 8% = 0.08. In t=1 year, he will pay in interest:

I = $400*0.08*1

I = $32.

In one year he will pay about $32 in interest

4 0
3 years ago
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